نتایج جستجو برای: average power ratio papr

تعداد نتایج: 1279109  

Journal: :EURASIP J. Adv. Sig. Proc. 2014
Nuan van der Neut Bodhaswar T. J. Maharaj Frederick H. de Lange Gustavo J. González Fernando H. Gregorio Juan E. Cousseau

This paper presents four novel techniques for peak-to-average power ratio (PAPR) reduction in filter bank multicarrier (FBMC) modulation systems. The approach extends on current PAPR reduction active constellation extension (ACE) methods, as used in orthogonal frequency division multiplexing (OFDM), to an FBMC implementation as the main

2015
Vinay Sharma Avtar S. Buttar

High peak-to-average power ratio of the transmit signal is a major drawback of multi-carrier transmission such as Orthogonal Frequency Division Multiplexing, which causes power inadequacy in Radio Frequency section of the transmitter. This paper describe some of the important PAPR reduction techniques for multi-carrier transmission including amplitude clipping and filtering, partial transmit se...

Journal: :EURASIP J. Wireless Comm. and Networking 2010
Ali Al-Shaikhi

This paper proposes a novel way to compact the constellation points in QAM modulation schemes and exploits this compaction to reduce the peak to average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The compaction is accomplished using one dimensional product code (PC). Significant PAPR reduction is achieved by carefully mapping the points in the compact versi...

2008
JING GAO JINKUAN WANG ZHIBIN XIE Z. XIE

Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) is a promising candidate for 4G broadband wireless communications. However, one main disadvantage of MIMO-OFDM is that the signals transmitted on different antennas might have large peak-to-average power ratio (PAPR). A new concurrent PAPR reduction algorithm based on the property of orthogonal space-time bloc...

2011
Pooria VARAHRAM Borhanuddin Mohd ALI

Partial transmit sequence (PTS) is one of the most important techniques for reducing the peak to average power ratio (PAPR) in OFDM systems. This paper presents a low complexity PTS scheme by applying a new phase sequence. Unlike the conventional PTS which needs several inverse fast Fourier transform (IFFT) operations, the proposed scheme requires half IFFT operations only at the expense of sli...

Journal: :IJCNS 2010
Ibrahim M. Hussain Imran A. Tasadduq Abdul Rahim Ahmad

In multi-carrier wireless OFDM communication systems, a major issue is high peaks in transmitted signals, resulting in problems such as power inefficiency. In this regard, a common practice is to transmit the signal that has the lowest Peak to Average Power Ratio (PAPR). Consequently, some efficient and accurate method of estimating the PAPR of a signal is required. Previous literature in this ...

Journal: :International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 2015

2014

In the previous chapter, to get high data rate transmission, High Throughput techniques were analyzed for OFDM-MIMO System. OFDMMIMO systems based on OFDM symbols suffer from the problem of inherent Peak to Average Power Ratio (PAPR). The peak power of a multi carrier OFDM signal is a critical design factor for band limited communication systems, and it is necessary to reduce it as much as poss...

Journal: :IJCNIS 2010
Y. A. Khan Mohammad Abdul Matin S. I. Ferdous

Limiting the peak to average power ratio (PAPR) to an acceptable level is of great importance to MIMO-OFDM systems. Otherwise, a series of undesirable interventions due to the large PAPR is encountered, such as inter-modulation distortion and outof-band radiation. In this paper, we have proposed a modified partial transmit sequence (PTS) scheme and implemented a new selected mapping (SLM) techn...

2014
N. Santosh kumar P. Kumari E. Suresh V. Radha krishna R. Divya kanthi

Orthogonal Frequency Division Multiplexing (OFDM) has grown to a popular communication technique for high speed communication in the last decade. OFDM is an important member of the multicarrier modulation (MC) techniques and it has been adopted as a standard for various high data rate wireless communication systems due to its spectral bandwidth efficiency, robustness to frequency selective fadi...

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